linux/include/trace/events/pwm.h
Uwe Kleine-König 1188829abc pwm: Implement tracing for .get_state() and .apply_state()
This allows to log all calls to the driver's lowlevel functions which
simplifies debugging in some cases.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2020-01-20 12:28:37 +01:00

59 lines
1.2 KiB
C

/* SPDX-License-Identifier: GPL-2.0-or-later */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM pwm
#if !defined(_TRACE_PWM_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_PWM_H
#include <linux/pwm.h>
#include <linux/tracepoint.h>
DECLARE_EVENT_CLASS(pwm,
TP_PROTO(struct pwm_device *pwm, const struct pwm_state *state),
TP_ARGS(pwm, state),
TP_STRUCT__entry(
__field(struct pwm_device *, pwm)
__field(u64, period)
__field(u64, duty_cycle)
__field(enum pwm_polarity, polarity)
__field(bool, enabled)
),
TP_fast_assign(
__entry->pwm = pwm;
__entry->period = state->period;
__entry->duty_cycle = state->duty_cycle;
__entry->polarity = state->polarity;
__entry->enabled = state->enabled;
),
TP_printk("%p: period=%llu duty_cycle=%llu polarity=%d enabled=%d",
__entry->pwm, __entry->period, __entry->duty_cycle,
__entry->polarity, __entry->enabled)
);
DEFINE_EVENT(pwm, pwm_apply,
TP_PROTO(struct pwm_device *pwm, const struct pwm_state *state),
TP_ARGS(pwm, state)
);
DEFINE_EVENT(pwm, pwm_get,
TP_PROTO(struct pwm_device *pwm, const struct pwm_state *state),
TP_ARGS(pwm, state)
);
#endif /* _TRACE_PWM_H */
/* This part must be outside protection */
#include <trace/define_trace.h>